#dic 字典
user = {'user1':'123','user2':'098','user3':'678'}
print(user)
print(user['user1'])

#修改字典
user['user1'] = '1111'
print(user)

#删除字典元素
del user['user1']
print(user)

#清楚字典所有元素
user.clear()
print(user)

#删除字典
del user